When you have a horrible case of
diarrhoea but you just can't put down
the latest hunger games book, so you try to read while your insides splurge out of you, usually getting large amounts of excrement on the book in the process.
Man 1: Hey man, you sounded pretty sick
last night.
Man 2: Yeah, but I managed to do some Diarrheading.
Man 1: Which book?
Man 2: The first Twilight book.
Man 1: Oh, good thinking. That book is already
full of shit, a little more wouldn't
change it.